<!doctype html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml" xmlns:v-on="http://www.w3.org/1999/xhtml" xmlns:v-model="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>

<div id="app">
    <input type="text" v-model="parentMsg">
    <my-component :msg="parentMsg"></my-component>
</div>


</body>
<script src="../../../vender/vue@2.4.2.js"></script>
<script>

    var app=new Vue({
        el:'#app',
        components:{
            'my-component':{
                template:'<div><div>Msg:{{msg}}</div></div>',
                props:['msg']
            }
        },
        data:{
            parentMsg:''
        }
    });


</script>
</html>